Operation Manual / A170-M.. - A175-M..
6 Operation and service / 6.3 Expected replacement intervals
© Copyright 2022 ABB. All rights reserved. HZTL4033_EN Rev.K January 2022
6.3 Expected replacement intervals
6.3.1 Influencing parameters
Rotating components
The recommended replacement intervals for compressor wheels and turbine wheels are spe-
cified based on the safety concept for rotating parts (SIKO) and dependent on the operating
conditions. These intervals are shown on the rating plate of the turbocharger.
Non-rotating components
Depending on the system-specific operating conditions, a differentiation must be made
between the intervals to be expected for:
¡ replacing the bearing parts and
¡ replacing the non-rotating components exposed to hot gas.
A decisive role is played by various influencing parameters which, in extreme cases, can
drastically reduce the replacement interval of these parts.
During the prescribed periodic service work, the individual parts are examined for wear and
replaced if necessary.
Influencing parameters for bearing parts
¡ Inferior lubricating oil quality (lubricating oil filtering, lubricating oil condition)
¡ Exceptional stresses (vibrations, start/stop frequency)
¡ Inadmissible unbalance of the rotor
Influencing parameters for exhaust gas-charged, non-rotating components
¡ Fuel quality (gas, MDO, HFO)
¡ Load profile (thermal cycling, number of start/stop cycles)
¡ Temperature level of the exhaust gas
¡ Frequency of turbine cleaning
¡ Turbine cleaning process
Influencing parameters for exhaust gas-charged, rotating components
¡ Fuel quality (gas, MDO, HFO)
¡ Frequency of turbine cleaning
¡ Turbine cleaning process
¡ Load profile
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